7208results about "Air-flow control members" patented technology

The present invention provides an improved method and system for controlling an HVAC system for managing multiple indoor air quality (IAQ) parameters. An acceptable range is defined for each of the IAQ parameter. The parameters are then monitored by sensors within a controlled space. The parameters may comprise temperature, humidity, smoke, radon, VOCs, carbon dioxide, carbon monoxide, particulates, hydrocarbons, oxygen, ozone, and odors. The invention maintains the IAQ parameters within their respective acceptable ranges by automatically manipulating certain HVAC system functions including heating, cooling, humidification, dehumidification, ventilation, addition or removal of materials or compounds which affect IAQ parameters, airflow volume and air recirculation. In one embodiment of the invention, a non-HVAC-specific venting system is used to augment HVAC adjustment of airflow volume and air recirculation. This may include bathroom, kitchen and attic venting systems as well as whole-home vacuum systems.

An Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can also be used in connection with a conventional zoned HVAC system to provide additional control and additional zones not provided by the conventional zoned HVAC system. In one embodiment, the ECRV is configured have a size and form-factor that conforms to a standard manually-controlled register vent. In one embodiment, a zone thermostat is configured to provide thermostat information to the ECRV. In one embodiment, the zone thermostat communicates with a central monitoring system that coordinates operation of the heating and cooling zones.

The invention discloses a cleaning control method for an indoor heat exchanger of an air conditioner. The cleaning control method includes the steps that when the air conditioner gets into the automatic cleaning mode, the refrigeration mode is started; evaporating temperature is reduced to enable water in air to be condensed into frost or thin ice on the indoor heat exchanger; after the air conditioner continuously runs in the refrigeration mode for set refrigeration time, the running mode of the air conditioner is switched to the heating mode from the refrigeration mode so that the frost or the thin ice on the heat exchanger can be thawed to clean the heat exchanger. The invention further discloses the air conditioner. By means of the cleaning control method and the air conditioner, automatic cleaning of the indoor heat exchanger of the air conditioner can be achieved, and therefore it can be avoided that the heat exchange efficiency of the heat exchanger is reduced.

A ceiling vent air diverter is taught, in the preferred embodiment, which incorporates a diverter body configured to cover beneath an existing air vent supplying air to a room of a building. The diverter body has a rectangular flat bottom and upstanding sides with each upstanding side having a discharge air slot permitting air to be distributed in opposed directions from the diverter at a ceiling level. A peripheral flange extends outwardly from each side of the body, in parallel relationship with the bottom and is used for attachment to the building ceiling. A second embodiment is configured and functions in the same manner as above but covers over the top of an existing air vent and includes a lip on the underside of the flange. The third embodiment is for a ceiling air duct diverter system consisting of a box like housing with side walls, an open top and open sides to divert air flow and having the capability of affixing the open top near a ceiling air vent.

A roof ventilation apparatus provides a vent tile shaped like a roof tile itself, and thus is inconspicuous and unobtrusive when installed, and blends with the field and/or ridgeline tile. The base of the unit may be used to mark the opening, after which a hole is cut in the roof, roofing cement is applied to the base flange, and the base is secured in place. The unit cover is then placed over the base and the remainder of the roof tile application is completed.

Systems and methods of determining static air pressure in an HVAC system are provided. Static air pressure is mathematically determined as a function of system parameters, such as blower speed, blower diameter, system volume airflow rate, and/or blower motor torque. The determined static pressure can be used during HVAC installation and during HVAC monitoring and maintenance.

The invention discloses an indoor unit of an air conditioner and a control method of the indoor unit of the air conditioner. The indoor unit of the air conditioner comprises a hosing, a first air deflector, a second air deflector and a third air deflector, wherein the housing is provided with a wind outlet; the first air deflector is rotatably arranged on the housing for opening or closing the wind outlet; the second air deflector is rotatably arranged on the housing and is located inside the first air deflector; a plurality of first wind dispersing holes penetrating through the second air deflector in the thickness direction are formed in the second air deflector; the third air deflector is rotatably arranged on the housing and is located inside the first air deflector; the third air deflector is located below the second air deflector; the upper end of the third air deflector is suitable for being matched with the lower end of the air deflector to close the wind outlet; a plurality of second wind dispersing holes penetrating through the third air deflector in the thickness direction are formed in the third air deflector. According to the indoor unit of the air conditioner provided by the invention, the wind speed at the wind outlet of the indoor unit of the air conditioner can be quickly reduced, so that no wind feel wind supply is realized.

A system and method for cooling and heating of buildings consisting of an integrated assembly of devices, including a variable speed air handler, hot water heating coil, outside air damper, controller, and optional compressor-based air conditioner. During summer the system utilizes nighttime outside air for cooling and uses air temperature predictions to provide information about optimal control settings and to maintain comfort. During winter the system varies airflow with heating demand and ventilates with outside air to maintain indoor air quality.

An operational air conditioning mode is allowed to set to a temperature uniformization mode and a spot air conditioning mode, and is selectively switched between these modes automatically by a control means (53) or manually. In such an embodiment, a comfortably air-conditioned state is obtained in all the areas of a space to be air-conditioned W during air conditioning performed in the temperature uniformization mode, and the comfort is ensured by intensively air-conditioning the surroundings of a person during air conditioning performed in the spot air conditioning mode. At the same time, since an unnecessary air conditioning is not provided to a region without the presence of a person, energy conservation is improved, for example, and thus the comfort of air conditioning and energy conservation are both achieved.

An air conditioning apparatus is provided. The air conditioning apparatus includes a cover assembly having an indoor air suction hole, a filter assembly cleaning indoor air sucked through the indoor air suction hole, and a grill. The grill includes a discharge grill formed on a side for discharging the indoor air cleaned by the filter assembly to an indoor area, and an exhaust grill for discharging indoor air to an outdoor area. A fan assembly draws indoor or outdoor air toward the grill. A rear panel is coupled to the grill. The rear panel includes a suction hole formed in one side for introducing outdoor air and an exhaust hole formed beside the suction hole for discharging indoor air to the outdoor area.

An airflow control valve for a clean room having a duct section with a damper positioned within the duct. The damper being capable of an adjustment from an open position to a closed position. The opening and closing of the duct is accomplished through a magnetic coupling such that the duct can remain sealed during operation. The airflow control valve includes a sensor for measuring the airflow rate, so that the duct can be adjusted to maintain one or more predetermined flow rate set-points.

An air damper assembly for regulating an air flow includes a frame, a plurality of elongated damper blade rotatably mounted to the frame, and a drive mechanism for actuating the damper blades between open and closed positions. The drive mechanism includes a gear fixedly secured to a distal end of each of the damper blades and an elongated rack slidably coupled to the frame. The rack meshingly engages the gears such that linear movement of the rack in a first linear direction results in rotational movement of the damper blades in a first rotational direction and linear movement of the rack in a second linear direction opposite the first linear direction results in rotational movement of the damper blades in a second, rotational direction opposite the first rotational direction

An arrangement for use in an occupancy-based ventilation system includes a plurality of CO2 sensors and a processing circuit. The plurality of CO2 sensors are disbursed throughout a plurality of spaces in a building. The processing circuit is operably coupled to receive information representative of CO2 measurements generated by the plurality of CO2 sensors. The processing circuit is operable to determine a value corresponding to occupancy, based on information from the CO2 sensors, and to control the flow of fresh supply air into the building ventilation system based on the determined value.

A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling demand signals from a plurality of zone thermostats positioned throughout the residence. Upon receiving a heating demand signal, the controller operates the primary heat source to provide heat to the zone issuing the heating demand signal. The controller determines whether the primary heat source satisfies the heating demand signal within a maximum heating period. If the heating demand is not satisfied within this period, the controller activates the secondary heat source to supplement the heat being supplied by the primary heat source.

A self-closing vent has its frame and honeycomb screen coated with an intumescent material. When affixed to an external wall or eave of a building, the vent is normally open, allowing free flow of air into and out of the building, but when exposed to the heat of a fire, such as a wildfire, the intumescent expands to close the vent, thereby preventing an external fire from entering the building.

The invention discloses an air conditioner indoor unit and a control method thereof. The air conditioner indoor unit comprises a base, a face frame, a driving device, a wind shield assembly and an air deflector, wherein the face frame is arranged on the base; a mounting cavity is defined between the base and the face frame; the face frame is provided with an air outlet; the driving device is arranged in the mounting cavity; the wind shield assembly is arranged on the driving device; the wind shield assembly is provided with a storage position and a wind shielding position; the wind shield assembly is stored in the mounting cavity when being positioned at the storage position; the wind shield assembly blocks at least one part of the air outlet when being positioned at the wind shielding position; the wind shield assembly is of a plate-shaped structure and is provided with a ventilation structure; the air deflector is provided with an open position and a closed position; the air deflector opens the air outlet when being positioned at the open position; the air deflector covers the air outlet when being positioned at the closed position. According to the air conditioner indoor unit disclosed by the embodiment of the invention, output wind cannot be directly blown onto the body of a user, so that somatosensory comfort of the user is improved.

An air passage has a blow-out side opening opposed to a position other than the longitudinal ends of a blow-out port of a decorative panel. The width of a louver, as determined in an air-blowing direction, decreases from a longitudinal center of the louver to the ends of the louver.

Air moving device includes a housing, an impeller in the housing for generating a downward air flow, and vanes in the housing in close proximity to and a selected distance below the impeller to straighten the air flow. The device produces an air flow that substantially remains in a column over a substantial distance. The method includes producing an air flow that substantially remains in a column over a substantial distance and directing the air flow from the ceiling towards the floor to provide temperature destratification of the air in an enclosed space. The method also includes directing warm air from the ceiling to the floor and storing heat in the floor, apparatus on the floor and ground under the floor. The stored heat is released when the ceiling is cooler than the floor.

An airflow distribution control system for usage in a raised-floor data center comprises an under-floor partition with a controllable flow resistance and a sensor. The partition is capable of selective positioning in a plenum beneath the raised-floor. The sensor is communicatively coupled to the partition and detects a parameter indicative of airflow distribution and controls the flow resistance based on the parameter.

A control strategy for supply fans in variable-air-volume heating, ventilating, and air-conditioning systems that reduces the static pressure at part-load conditions. The invention consists of a static pressure sensor, an airflow sensor, a supply fan, a fan modulating device, and a controller coupled to the static pressure sensor and the airflow sensor. The controller includes a calculator that calculates the static pressure setpoint as a function of the airflow rate. The static pressure setpoint is lower when the airflow rate is lower. The controller compares the static pressure setpoint with the static pressure, and it commands the fan modulating device so that the static pressure remains close to the static pressure setpoint. Alternatively, the controller includes a calculator that calculates a loss coefficient as a function of the static pressure and the supply rate. The controller compares the loss coefficient with a loss coefficient setpoint, and it commands the fan modulating device so that the loss coefficient remains close to the loss coefficient setpoint. When the airflow rate is sufficiently high, the alternative embodiment switches to a constant-pressure controller.

This application relates to ventilation systems, more particularly to a roof vent with one or more fan assemblies and/or an associated solar panel. The roof vent has an upper member including at least one opening that permits air flow between regions above and below the upper member. The vent further includes a lower member in fluid communication with the region below the upper member. The lower member includes a second opening permitting air flow between a region below the roof deck and the region below the upper member. The lower member further includes a fan configured to generate air flow through the second opening, wherein the fan resides in a fan housing positioned below the second opening.

The invention discloses a cabinet-type constant temperature and constant cleanliness fresh air purifying system. The fresh air purifying system comprises an indoor cabinet-type air-conditioner. The indoor cabinet-type air-conditioner is internally provided with an air adjusting unit and a fresh air purifying unit. The indoor cabinet-type constant temperature and constant cleanliness fresh air purifying system is sequentially provided with an air outlet, a heat exchanger, an air conditioning fan and a fresh air purifier from top to bottom. The indoor cabinet-type air-conditioner is provided with an indoor air inlet and an outdoor air inlet. The outdoor air inlet can independently correspond to the fresh air purifier to lead in and purify outdoor air and then exhaust the air indoors while the indoor cabinet-type air-conditioner completes cooling and heating of indoor gas. The cabinet-type constant temperature and constant cleanliness fresh air purifying system is convenient to use, the requirements of indoor refrigerating, heating and indoor air purification can be met at the same time, and meanwhile the fresh air function can be achieved; and purifying efficiency is high, the fresh air purifying system is suitable for indoor multi-space and large-area air purification, and due to arrangement of the fresh air system, the indoor air constant temperature and constant cleanliness and freshness in the long-term purifying process indoors can be kept.

An active material actuated louver system having an actuator mechanism operable to selectively place a louver or louver system in an open or closed state of operation. The actuator mechanism includes a cable or wire formed from an active material, such as a shape memory alloy.

Disclosed is an air cleaner having independent fluid paths and a home appliance having the air cleaner. The air cleaner includes a front panel having a plurality of air inlets formed thereon for air to flow in from outside of the case, first and second blower devices arranged inside the case to allow air to flow in through the plurality of air inlets, first and second filter units arranged to filter the air flowing in by the first and second blower devices, a first outlet located on the case to release the air, a second outlet formed at a different location from that of the first outlet, a first fluid path formed between one of the plurality of air inlets and the first outlet; and a second fluid path formed between another of the plurality of air inlets and the second outlet.

A closed control knob for a vent having vanes and louvers includes a resilient member integrally molded within the control knob. The resilient member acts between the control knob and the louver on which it is mounted to provide a frictional force to retain the knob in the position it is placed by a passenger in a vehicle of other user. By integrally forming the resilient member with the control knob, assembly is simplified and failure of glued, snapped or welded joints is avoided.

A positive electrode active material for a non-aqueous electrolyte secondary battery of this invention includes: a lithium nickel composite oxide containing lithium, nickel, and at least one metal element other than lithium and nickel; and a layer containing lithium carbonate, aluminum hydroxide, and aluminum oxide, the layer being carried on the surface of the lithium nickel composite oxide. The lithium nickel composite oxide is composed such that the ratio of the nickel to the total of the nickel and the at least one metal element is 30 mol % or more. The layer is composed such that the amount of the lithium carbonate is 0.5 to 5 mol per 100 mol of the lithium nickel composite oxide. The total of aluminum atoms contained in the aluminum hydroxide and the aluminum oxide is 0.5 to 5 mol per 100 mol of the lithium nickel composite oxide.

Apparatus, systems and methods of 110 (one hundred ten) CFM (cubic feet per minute) generating ventilation fans for bathrooms with grill covers and with or without lights in the grill covers. Spring clip type washers can attach the grill covers to the housings. Suspension brackets directly attached to outer side walls of the housing can support the housings. One suspension bracket can be mounted on a bottom wall of the housing and another suspension bracket of equal length can be mounted on a side wall of the housing that is oriented perpendicular to the bottom wall. Bent flanges on the suspension brackets can be on opposite ends of the respective brackets. A lens cover can cover a light box that holds light sources centrally located in the grill cover. The grill cover can include vent openings that allow incoming air to bypass the light sources that can be located inside of the light box.

The invention provides an air guiding device. The air guiding device comprises an air guiding plate, an air guiding blade assembly, a first drive mechanism and a second drive mechanism, wherein the air guiding blade assembly is installed on the air guiding plate, the first drive mechanism is arranged at one end of the air guiding plate and is connected with the air guiding plate to drive the air guiding plate to swing up and down to sweep wind, and the second drive mechanism is arranged at the other end of the air guiding plate and is connected with the air guiding blade assembly to drive the air guiding blade assembly to swing left and right to sweep wind. The air guiding blade assembly comprises a blade fixing rod, a blade connecting rod and a plurality of air guiding blades, each air guiding blade comprises a sheet-shaped body, a first installing part and a second installing part, wherein the first installing part and the second installing part are installed at the bottom of the body, and each air guiding blade is detachably connected with the blade fixing rod and the blade connecting rod through the first installing part and the second installing part. The air guiding device has the advantages of being small in occupied space and convenient to dismount and wash. The invention further provides an air conditioner with the air guiding device.

The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.

The present invention provides a solar-powered ventilation system for an attic or rafter space that mimics the appearance of the roofing material and thus has little effect on the appearance of the building. The vent has two pieces, a primary vent and a secondary vent. The primary vent is installed on a roof deck over a ventilation opening cut through the deck. The secondary vent is constructed to look like the surrounding field tiles and is installed over the primary vent. The secondary vent includes a solar panel preferably attached to the top surface of the secondary vent. One or more vent openings in the secondary vent and an opening in the primary vent conduct air between the attic or rafter space and the outside. In certain preferred embodiments, a solar-powered fan is also preferably located underneath the secondary vent.